21293580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{419}}^1$

素因数の和:460

約数の個数: 144

約数和(自身を含む): 75075840

約数和(自身を除く): 53782260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 66, 70, 77, 84, 105, 110, 121, 132, 140, 154, 165, 210, 220, 231, 242, 308, 330, 363, 385, 419, 420, 462, 484, 605, 660, 726, 770, 838, 847, 924, 1155, 1210, 1257, 1452, 1540, 1676, 1694, 1815, 2095, 2310, 2420, 2514, 2541, 2933, 3388, 3630, 4190, 4235, 4609, 4620, 5028, 5082, 5866, 6285, 7260, 8380, 8470, 8799, 9218, 10164, 11732, 12570, 12705, 13827, 14665, 16940, 17598, 18436, 23045, 25140, 25410, 27654, 29330, 32263, 35196, 43995, 46090, 50699, 50820, 55308, 58660, 64526, 69135, 87990, 92180, 96789, 101398, 129052, 138270, 152097, 161315, 175980, 193578, 202796, 253495, 276540, 304194, 322630, 354893, 387156, 483945, 506990, 608388, 645260, 709786, 760485, 967890, 1013980, 1064679, 1419572, 1520970, 1774465, 1935780, 2129358, 3041940, 3548930, 4258716, 5323395, 7097860, 10646790, 21293580]

約数ペア:

[(1, 21293580), (2, 10646790), (3, 7097860), (4, 5323395), (5, 4258716), (6, 3548930), (7, 3041940), (10, 2129358), (11, 1935780), (12, 1774465), (14, 1520970), (15, 1419572), (20, 1064679), (21, 1013980), (22, 967890), (28, 760485), (30, 709786), (33, 645260), (35, 608388), (42, 506990), (44, 483945), (55, 387156), (60, 354893), (66, 322630), (70, 304194), (77, 276540), (84, 253495), (105, 202796), (110, 193578), (121, 175980), (132, 161315), (140, 152097), (154, 138270), (165, 129052), (210, 101398), (220, 96789), (231, 92180), (242, 87990), (308, 69135), (330, 64526), (363, 58660), (385, 55308), (419, 50820), (420, 50699), (462, 46090), (484, 43995), (605, 35196), (660, 32263), (726, 29330), (770, 27654), (838, 25410), (847, 25140), (924, 23045), (1155, 18436), (1210, 17598), (1257, 16940), (1452, 14665), (1540, 13827), (1676, 12705), (1694, 12570), (1815, 11732), (2095, 10164), (2310, 9218), (2420, 8799), (2514, 8470), (2541, 8380), (2933, 7260), (3388, 6285), (3630, 5866), (4190, 5082), (4235, 5028), (4609, 4620)]